Surveying
With the rise of temperature, the sensitivity of a bubble tube

remains unaffected
increases
None of these
decreases

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Surveying
Contour interval is

Larger if the time available is more
Inversely proportional to the scale of the map
Directly proportional to the flatness of ground
Larger for accurate works

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Surveying
A ’level line’ is a

line passing through the center of cross hairs and the center of eye piece
line parallel to the mean spheriodal surface of earth
horizontal line
line passing through the objective lens and the eye-piece of a dumpy or tilting level

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